package com.chen.rabbitmq.eight;

import com.chen.rabbitmq.utils.RabbitMqUtils;
import com.rabbitmq.client.BuiltinExchangeType;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.DeliverCallback;

import java.util.HashMap;
import java.util.Map;

/**
 * @author Y·C
 * @version 1.0.0
 * @ClassName Consumer01.java
 * @Description 死信队列实战   消费者1
 * @createTime 2023年05月11日 15:08:00
 */
public class Consumer01 {

    //普通交换机的名称
    private static final String NORMAL_EXCHANGE = "normal_exchange";
    //死信交换机的名称
    private static final String DEAD_EXCHANGE = "dead_exchange";
    //普通队列的名称
    public static final String NORMAL_QUEUE = "normal_queue";
    //死信队列的名称
    public static final String DEAD_QUEUE = "dead_queue";

    public static void main(String[] args) throws Exception {
        Channel channel = RabbitMqUtils.getChannel();

        //声明死信和普通交换机 类型为direct 直接交换机
        channel.exchangeDeclare(NORMAL_EXCHANGE, BuiltinExchangeType.DIRECT);
        channel.exchangeDeclare(DEAD_EXCHANGE, BuiltinExchangeType.DIRECT);


        /**
         * 消息被拒绝
         * 消息TTL过期
         * 队列达到最大长度
         * */
        //声明普通队列
        Map<String,Object> arguments = new HashMap<>();
        //过期时间
        //arguments.put("x-message-ttl",100000);
        //正常队列设置死信交换机
        arguments.put("x-dead-letter-exchange",DEAD_EXCHANGE);
        //设置死信RoutingKey
        arguments.put("x-dead-letter-routing-key","lisi");
        //设置正常队列的长度的限制
        //arguments.put("x-max-length",6);

        channel.queueDeclare(NORMAL_QUEUE,false,false,false,arguments);
        //////////////////////////////////////////////////////////////////////////////////
        //声明死信队列
        channel.queueDeclare(DEAD_QUEUE,false,false,false,null);

        //绑定普通的交换机与普通的队列
        channel.queueBind(NORMAL_QUEUE,NORMAL_EXCHANGE,"zhangsan");
        //绑定死信的交换机与死信的队列
        channel.queueBind(DEAD_QUEUE,DEAD_EXCHANGE,"lisi");
        System.out.println("等待接收消息........");


        DeliverCallback deliverCallback = (consumerTag, message)->{
            String msg = new String(message.getBody(),"UTF-8");
            if (msg.equals("info5")){
                System.out.println("Consumer01接收的消息是" + msg + ": 此消息是被C1拒绝的");
                channel.basicReject(message.getEnvelope().getDeliveryTag(),false);
            }else {
                System.out.println("Consumer01接受的消息是: " + msg );
                channel.basicAck(message.getEnvelope().getDeliveryTag(),false);
            }
        };



        channel.basicConsume(NORMAL_QUEUE,false,deliverCallback,consumerTag ->{});
    }


}


